package com.yami.shop.common.wx;

import java.security.MessageDigest;

/**
 * @Description:
 * @BelongsProject: yami-shop
 * @BelongsPackage: com.yami.shop.common.wx
 * @Author: Administrator
 * @CreateTime: 2021-10-19 14:26
 * @Version: 1.0
 */
public class MD5Util {

    private static String byteArrayToHexString(byte b[]) {

        StringBuffer resultSb = new StringBuffer();

        for (int i = 0; i < b.length; i++)

            resultSb.append(byteToHexString(b[i]));

        return resultSb.toString();

    }

    private static String byteToHexString(byte b) {

        int n = b;

        if (n < 0)

            n += 256;

        int d1 = n / 16;

        int d2 = n % 16;

        return hexDigits[d1] + hexDigits[d2];

    }

    public static String MD5Encode(String origin, String charsetname) {

        String resultString = null;

        try {

            resultString = new String(origin);

            MessageDigest md = MessageDigest.getInstance("MD5");

            if (charsetname == null || "".equals(charsetname)) {

                resultString = byteArrayToHexString(md.digest(resultString

                        .getBytes()));

            }else {

                resultString = byteArrayToHexString(md.digest(resultString

                        .getBytes(charsetname)));
            }
        } catch (Exception exception) {

        }

        return resultString;

    }

    private static final String hexDigits[] = { "0", "1", "2", "3", "4", "5",

            "6", "7", "8", "9", "a", "b", "c", "d", "e", "f" };
}
